Effects of Paving Technology, Pavement Materials, and Structures on the Fatigue Property of Double-Layer Pavements

Table 1

Technical properties of the asphalt used in this study.

Technical index	Penetration (25°C, 0.1 mm)	Ductility (10°C, cm)	Soft point (°C)	Relative density (15°C)	Dissolvability (%)	Dynamic viscosity (60°C, Pa·s)	Engle viscosity
A-70 petroleum asphalt	73	37.1	47	1.019	99.7	236.5	—
SBS-modified asphalt	65	69.5	85	1.035	99.6	—	13.0